ami goldmani=_ Osgood.--This subspecies has been
reported previously only from the type locality, Alamos, Sonora. Eight
specimens were collected in Sinaloa by W. L. Cutter in the autumn of
1957 as follows: 6 mi. N, 1-1/2 mi. E El Dorado (75368-72); 2-1/2 mi. N
El Fuerte (75365-66); El Fuerte (75367). The first-mentional locality is
approximately 200 miles south-south-east of the type locality. All
specimens collected by Cutter were taken in lowland areas, supporting
remarks by Commissaris (1960) concerning habitat preferences of _P.
merriami_ as compared with those of the closely related _P. eremicus_.

Two of three females from northeast of El Dorado were pregnant on
November 18 and 19; one carried four embryos (8 mm. in crown-rump
length) and the other three (11 mm.).

External and cranial measurements of _P. m. goldmani_ previously
were known only for the holotype (Osgood, 1909:252, 267).
Measurements of five adults, a male (75370) and four females
(75365, 75369, 75371-72) are, respectively, as follows: total
length, 204, 225, 215, 214, 210; length of tail, 105, 120, 110,
108, 109; length of hind foot, 21, 23, 23, 22, 22; length of ear
from notch, 21, 21, 21, 20, 21; weight in grams, 29, 19, 35
(pregnant), 33, 34 (pregnant); greatest length of skull, 26.6,
26.5, 26.9, 26.5,----; zygomatic breadth, 13.8, 13.9, 14.1,
13.4,----; interorbital constriction, 3.9, 3.8, 4.0, 4.0,----;
mastoid breadth, 11.8, 11.9, 11.8, 11.9, 11.5; length of nasals,
10.1, 9.4, 10.0, 10.0,----; length of maxillary tooth-row, 4.5,
4.3, 4.1, 4.1, 4.1.

_=Onychomys torridus yakiensis=_ Merriam.--Only one specimen of this
grasshopper mouse has been reported previously from Sinaloa (from the
town of Sinaloa by Hollister, 1914:471). Thirteen specimens in the
Museum of Natural History better define the range of the species in the
state as follows: 12 mi. N Culiac['a]n (67981-82); 6 mi. N, 1-1/2 mi. E El
Dorado (75374-80); 2-1/2 mi. N El Fuerte (75373); 1 mi. S Pericos
(62118-20). The individuals from northeast of El Dorado extend the known
range of the species some 115 miles south-southeast from Sinaloa.

A female taken on November 17, 1957, from 6 mi. N, 1-1/2 mi. E El Dorado
carried two embryos that measured 23 mm. in crown-rump length. A female
obtained on November 18 at the same place carried four embryos that
measured 10 mm.

_=Neotoma albigula melanura=_ Merriam.--Four specim